Electric switch



June 11, 1935. F, W. SONN 2,004,773

ELECTRIC SWITCH Filed Sept. lO, 1934 ,4 J' Y l' Patented June 11, 1935 2,004,773

UNITED STATES PATENT OFFICE ELECTRIC SWITCH Fred William Sonn, Pottstown, Pa.

Application September l0, i934, Serial No. 743,447

lo Claims. (Cl. 200-142) This invention relates to electric switches and points open to break the supply to the heater or has for an object to provide a switch thermaily to the control. For this purpose a tube or sleeve controlled for breaking a circuit when the temi is provided, of such proportion as to receive perature has reached a predetermined the switch therein in its entirety, and for associ- A further object of the invention is to provide ation with a water heater represented by the 5 a switch of such proportion and construction as wail il', or any other heated chamber, a threadt0 be inserted within a tube or casing, which in ed plug or bushing i?. is employed, secured to the turn may be inserted into or clamped to a heated sleeve It in water-tight or air-tight condition. chamber, so that the switch proper will not come The bushing ii! has an opening I3 corresponding in contact with the contents of the chamber, but in sise and registering with the hollow chamber 10 will be acted upon by the temperature surroundformed by the sleeve it). ing the switch. The switch comprises two halves or segments A further object of the invention is to provi-:le i4 and i5 when placed together, forni a switch having contacts yieldingly mounted, so approximately cylindrical body of such size as arranged that the tendency of the yielding memto t ely inserted through the opening i3 of 15 bers is to separate the switch contacts and break the busl2 into the sleeve I0.

the circuits, said switch contacts to be held nor- These segments may be secured together in mally in closed and contacting position by a solder any approved manner, the showing of bindor like material at such temperature as will reping wires it is not to be understood as any limiresent the predetermined maximum. tation upon the use oi any other type of bond. 20

The invention, therefore, comprises in combi- Each of these segments l!! and i5 is provided nation with a tube and means for associating the with a groove, ShOWD TSSLGCCl/ely at i7 and G tube with a chamber, of a switch comprising which, in the combined body, form an opening halves or sections, each of which carries a switch entirely through the switch body.

5 element, and which may be combined by placing in the type shown at Figure 1, two contact 25 the two halves or segments together, with any Springs i9 and .20 are secured, one to each of the approved type of binding means, after which the Segments as shown. These spring contacts may contacts are soldered and the whole inserted into be SeSUlSfi in any approved manner, but as the tube in position to be acted upon by the sur- Shown, oars 2i and 22 are positioned UDCH the 30 rounding heat, proximate sides of ,these spring contacts, and 30 The drawing illustrates several embodiments of SClevvs 'ifi and E4 inserted through the rethe invention and the views therein are as fol- SFBCWG Sd Ui and 5 and elleag ill threaded lows: connection the bars 2i and 22, whereby the Figure 1 isadiametrical sectional view through Spring Contacts i9 and 2U are rigidly secured .'35 one type of the switch enclosed in a tube or sleeve Within the Sperling fOlmSd by the gIOOVBS 35 and inserted into a chamber, and I8.

Figure 2 is a, diametrieal Sectional View 0f a These bars 2i and 22 form means for connecdifferent type 0f the Switch, tion with the lead-in wires 25 and 26, which are Figure 3 is a perspective View of 3, fagmtgnt of CODDBCE., IeSpCilVSly, With h ballS 2i (fl-rid 22 lo the switch elements in the type shown at Figure by the bindingr SCTGWS 2T and 23. 40

2, and After the several contact and conductor parts Figure 4 is a view in elevation of the switch have been QSSOCEJJS With the Segments as specifically showing the type shown at Figure l, ShOWD, and the SSQIHSIIS United by tht) bOIldS l5,

but substantiauy Showing both typeg or otherwise, the extremities of the s; ring con.- 45 Like Characters of reference indicate @@rtacts i9 and 2d are drawn together and through 45 sponding parts throughout the several views. the Opening irl the 6nd Of the bOdy, a lOW f"- The improved switch which forms the subject- Solder 29 is applied to hold such ends in conmatter of this application of quite general utiltact, whereby circuit is completed between the ity, but is especially designed for use in associalead-in wires and 2S.

50 tion with a hot water boiler electrically heated As an alternative structure, as shown at Fig- 50 or the heating apparatus electrically controlled ure 2, the bar 30 is provided with a right angle whereby when the temperature of the water has bend or L 3|, and the bar 32 with a reversely been raised to the danger point, or any predecurved bend 33. The reverse bent curves 33 protermned maximum, a solder which forms a part vides a bearing for the knife edge 34 of the of the switch apparatus is fused, and the switch Switch 35. The switch 35 is bifurcated at 36 and 55 the reverse bend 33 is similarly bifurcated at 31, Such bifurcations aligning, and a spring 38 is secured at 3S to the bar 32 and is provided with a section 4i) which draws across the fulcrum formed by the knife edge 34 in the reverse bend 33, as shown at Figure 2. This spring has a tendency to move and hold the switch 35 at the position shown in dotted lines at Figure 2. To overcome this tendency the switch 35 is brought into engagement with the L-bend 3l and a low fusing solder il applied through the end of the body, as described in regard to the assembly of the type shown at Figure l.

vWhen the solder is fused by heat, the spring 33 tends to move the switch 35 to dotted line position and break the circuit.

In either type the switch as an entirety is merely slipped into the sleeve lo. Of course, any approved means may be employed for maintaining it in that position, but it is not ordinarily deemed necessary as it will therein maintain itself. When and if the heat of the surrounding chamber shall fuse the solder and open the switch, the switch body as an entirely may be quickly withdrawn and resoldered or conveniente ly and quickly disconnected and a substitute switch properly soldered used as a replacement, which may be returned to the tube with the loss of but a few moments of time.

It is always possible to resolder either of the types shown, which may be done, and the switch returned or another switch substituted and the soldering done at leisure.

Of course, the electric switch herein illustrated may be modined and changed in various ways without departing from the invention herein set forth and hereinafter claimed.

l. An electric switch comprising a hollow substantially cylindrical body of insulating material formed in opposed segments, a switch contact part carried by each of the opposed segments, means tending to separate the switch parts, and an easily fused material holding the contact parts in connection.

2. An electric switch comprising a substantially cylindricalbody formed in segments having an opening through its center7 means holding the segments united, switch contact parts carried by opposed segments and located within the opening, said switch parts embodying means tending to maintain the parts yieldingly out of contact, and a low fusing material holding the switch parts in electrical contact.

3. An electric switch comprising a substantially cylindrical body composed of segments of insulating material, said segments being provided with furrows extending longitudinally thereof forming in the unit an opening extending axially through the body and open at opposite ends, switch members connected to opposed segments, means tending to hold the switch members normally out of contact, and low fusing material holding the switch members in contact.

4. An electric switch comprising a substantially cylindrical body composed of segments of insu lating material, said segments being provided with furrows extending longitudinally thereof and unitedly forming an axial passage open at both ends and extending throughout the unit, spring contact members located within the passage and each connected to the wall of the passage so proportioned as to remain initially out of contact, and low fusing material holding the switch members in contact.

5. The combination with a sleeve and bushing, of an electric switch comprising a body properly proportioned to pass through the bushing into the sleeve and composed of united parts, said parts being provided with furrows unitedly forming a passage longitudinally through the body, switch members within the passage and each individually connected with one of the parts of the body, inhering means tending to hold the switch parts out of contact, and a low fusing material holding the switch parts in contact.

6. An electric switch comprising a substantially cylindrical body composed of segments each having a furrow formed therein unitedly forming a longitudinal and axial passage entirely through the body, spring contact members secured upon opposite sides of the passage and initially out of contact each with the other, and low fusing material connecting the resilient ends of said spring contact members.

7. An electric switch comprising a substantially cylindrical body composed of segments of insulating material each provided with a furrow unitedly forming a passage extending longitudinally throughout the body and open at both ends, a switch element secured to the inner wall of one of said segments and provided adjacent to one open end with an L-bend, a second switch element secured to the opposing wall and provided with a swinging contact member, a spring tending to move and hold the contact member out of engagement with the L-bend, and a low fusing material connecting the swinging contact member to the i.bend.

8. An electric switch comprising an insulating block made up of sections provided with longitudinal furrows registering to form a passage entirely throughout the block, a switch contact carried by each of the parts, means tending to separate the switch parts, and an easily fused material holding the contact parts in connection.

9. An electric switch comprising an insulating block made up of sections provided with longitudinal furrows registering to form a passage er1- tirely throughout the block, spring contact members located within the passage and each connected to a wall of the passage so proportioned as to remain initially out of contact, andlow fusing material holding the switch members in contact.

10. An electric switch comprising an insulating block made up of sections provided with longitudinal furrows registering to form a passage entirely throughout the block, a switch element secured to the inner wall of one of said sections and provided adjacent to one open end with an L-bend, a second switch element secured to the opposing wall and provided with a swinging con-y tact member, a spring tending to move and hold the contact member out of engagement with the L-bend, and a low fusing material connecting the swinging contact member to the L-bend,

FRED WILLIAM SONN. 

